One year after the devastating March 11 tsunami and earthquake caused a nuclear crisis at the Fukushima Daiichi nuclear power station in Japan, regulators in the U.S. are working to ensure the country's fleet of nuclear reactors are safe and strong enough to withstand a natural or man-made disaster of similar force.
As New York intensifies its debate over whether to employ hydraulic fracturing techniques to recover shale-gas deposits in the Marcellus shale formation, Gov. Andrew Cuomo is sticking to his pledge to "let the science and the facts" determine if the state' should lift a two-year moratorium on fracking.
The main structural elements of the retractable skylight, each 10.5 tons, had to be lifted at night onto their rooftop rail girders, using three cranes.
With all the heavy lifting done, three waterfalls cascading and the fish spawning, no one would suspect how much strenuous exercise it took to design, engineer and construct a 1,225-ft-long replica of Salt Lake City's City Creek.
Related Links: Disappearing Act is a 'Whalebone' of a Feat Creek Replica at City Creek is so Real, it Even has Fish For Shelley R. Clark, a structural engineer for the world's most complicated retractable skylight, frustration became the mother of invention. But ultimately, it took her firm Magnusson Klemencic Associates only 15 minutes to turn
Photo courtesy of Dulles Transit Partners balancing act Tunnels for Dulles metro extension were built with the New Austrian Tunneling Method in shallow conditions. Related Links: Virginia Governor Vetoes Tunnel Option for D.C. Metrorail Extension Dulles Project: Not Dead Yet Responding to lawmakers' concerns, the board of the Metropolitan Washington Airports Authority rescinded this month a mandatory project labor agreement for work on the extension of Virginia's Metrorail system to Dulles airport.Instead, the future design-build team for the 11.4-mile second phase—now estimated at $2.7 billion, rather than $3.8 billion—can voluntarily sign a project pact that would apply only to the
In what one official termed "our big experiment," the Obama administration convened an unusual four-hour closed session at the White House on March 9 for top industry and federal managers to figure out how to push sustainability into federal infrastructure procurement.
It has traveled a long, bumpy path, but a controversial proposal to build a major bridge between Minnesota and Wisconsin has moved a giant step closer to a groundbreaking. Congress has cleared a bill exempting the estimated $626.4-million St. Croix River bridge from the requirements of the Wild and Scenic Rivers Act. The 1968 statute bars federally funded projects that would harm such rivers' scenic qualities.
Eugene A. "Gene" Conti Jr., secretary of the North Carolina Dept. of Transportation since 2009, is fighting the battle for transportation funding on multiple fronts, including a role in a Federal Highway Administration pilot program that could enable tolls on the state's 182-mile stretch of Interstate 95 as a way to pay for upgrades.
The Sixth Street Viaduct Bridge in Los Angeles—the site of numerous Hollywood movie scenes—has reached the end of its career. City engineers are reviewing a request-for-proposals document for a final cable-stayed design to replace the structure, which consists of two prestressed-concrete viaducts and a double steel-arch center span.
RSS
